It seems to depend on what style is used and/or if people implemented some of the unofficial fixy things that are being linked around. failfandom_anon and others look and function fairly normally on my phone by now, but the announcement post in lj-releases takes ages to load. It does a long and weird resizing dance when I click 'comment', and the 'add a comment' button is completely gray. Couldn't actually read the text on it until I zoomed in on the thing. When I click 'expand' on a comment, the view jumps to the top of the comment page. It goes back down to the expanded thread as soon as it finishes loading, but it takes so long that you start thinking something went wrong and go navigating up and down the page again. (Dolphin browser on Android)